Dust filter bag for a vacuum cleaner

Abstract

The invention pertains to a filter bag (8) for a vacuum cleaner (1), with a retainer plate (16) made of a cardboard-paper material that can be attached to a dust bag (37), for example by gluing, and that has a sealable opening (19) for a suction tube (vacuum connector (18)) of a vacuum cleaner (1), where the opening (19) can be closed off with a separate closure piece (V) which can be moved from an open position to a closure position, being slid between two tiers (38, 40). For greater ease of handling the invention proposes that the closure piece (V) be practically fully enclosed in an outer contour of the retainer plate (16) in the open position and in the closure position and that the closure piece (V) lie exposed in a recess (57) of the uppermost tier (38) separate from the opening (19), the longitudinal extension of the recess (57) conforming to the closure piece (V).

We claim: 
     
       1. Dust filter bag for a vacuum cleaner, filter bag comprising: a mounting plate comprising a card-paper material, and a dust bag connected to the mounting plate, the mounting plate having a sealingly closable opening for receiving a suction tube of a vacuum cleaner, the mounting plate further comprising an upper layer and a lower layer which extend across the dust bag with the lower layer being located between the upper layer and the dust bag;   a closure member disposed between said upper layer and said lower layer, and being displaceable from an open disposition into a closed position for closure of said opening;   wherein said closure member is accommodated substantially completely within an outer contour of the mounting plate in a closed position and in an open dispositions;   an elongated recess is disposed in said upper layer for exposing a portion of said closure member; and   said recess is separate from said opening, and a longitudinal dimension of said recess corresponds to a path of displacement of the said closure member.   
     
     
       2. Dust filter bag according to claim 1, wherein said mounting plate includes a third layer disposed between said upper layer and said lower layer, said lower layer providing a substantially full surface area support for the closure member in the open disposition. 
     
     
       3. Dust filter bag according to claim 1, wherein and edge of said closure member extends out to or beyond the edge contour of the mounting plate at least over a portion of a path of displacement of the closure member. 
     
     
       4. Dust filter bag according to claim 1, wherein the closure member comprises a relatively wide portion for closing said opening, and a relatively narrow handle portion extending from said wide portion beneath said recess of said upper layer. 
     
     
       5. Dust filter bag according to claim 1, further comprising a spade handle associated with the said recess. 
     
     
       6. Dust filter bag according to claim 5, further comprising a handling projection (M) provided on said spade handle. 
     
     
       7. Dust filter bag according to claim 5, wherein said spade handle has a section capable of being folded-out. 
     
     
       8. Dust filter bag according to claim 7, wherein two fold locations are provided in said spade handle section. 
     
     
       9. Dust filter bag for a vacuum cleaner, the filter bag comprising: a mounting plate comprising a card-paper material, and a dust bag connected to the mounting plate, the mounting plate having a sealingly closable opening for receiving a suction tube of a vacuum cleaner, the mounting plate further comprising an upper layer and a lower layer which extend across the dust bag with the lower layer being located between the upper layer and the dust bag;   a closure member disposed between said upper layer and said lower layer, and being displaceable from an open disposition into a closed position for closure of said opening;   wherein said closure member is accommodated substantially completely within an outer contour of the mounting plate in a closed position and in an open disposition;   an elongated recess is disposed in said upper layer for exposing a portion of said closure member;   said recess is separate from said opening, and a longitudinal dimension of said recess corresponds to a path of displacement of said closure member; and   a rubber seal is provided on the peripheral edge of said opening, the rubber seal projecting inwardly beyond a periphery of said opening that to provide an inwardly projecting stabilizing portion in overlapping relationship with the rubber seal.   
     
     
       10. Dust filter bag according to claim 9, wherein said stabilizing portion comprises a card-paper material. 
     
     
       11. Dust filter bag according to claim 9, wherein said stabilizing portion is provided in the form of a tongue. 
     
     
       12. Dust filter bag according to claim 9, wherein a dimension (e) of said stabilizing portion in an inward direction relative to a periphery of said opening corresponds to approximately one-half of the dimension (E) of the rubber seal in the inward direction. 
     
     
       13. Dust filter bag according to claim 9, wherein the dimension (E) of the rubber seal in the inward direction from the periphery of said opening corresponds to a range of approximately three-tenths to five-tenths of a diameter of said opening. 
     
     
       14. Dust filter bag according to claim 9, wherein for a multilayer construction of said mounting plate, said stabilizing portion is provided as part of a layer which is in direct contact with said rubber seal. 
     
     
       15. Dust filter bag according to claim 9, wherein said stabilizing portion is provided on a side of said rubber seal directed away from the dust bag. 
     
     
       16. Vacuum cleaner comprising: a dust filter bag having a mounting plate with an opening for a suction connection;   wherein the mounting plate has a closure member which is automatically displaceable into a closed position in the course of opening the vacuum cleaner;   the vacuum cleaner further comprises an actuation projection (B) provided on a portion of the vacuum cleaner;   said actuation projection is operative on the closure member during opening or closing of the vacuum cleaner; and   a length of the actuation projection (B) for actuation of the closure member is variable.   
     
     
       17. Vacuum cleaner according to claim 16, wherein the actuation projection (B) is shortened in the disposition of use of the dust filter bag upon an opening of said closure member. 
     
     
       18. Vacuum cleaner according to claim 16, wherein the actuation projection (B) is provided with spring-biasing in a direction of extension. 
     
     
       19. Vacuum cleaner according to claim 16, further comprising a drag cover (T) wherein the actuation projection (B) is disposed on said drag cover. 
     
     
       20. Vacuum cleaner according to claim 16, further comprising a spring disposed between said drag cover (T) and said actuation projection (B), wherein the actuation projection is pivotable against the spring. 
     
     
       21. Vacuum cleaner according to claim 16, wherein registration projections are provided connected to said actuation projection (B), said registration projections enter into registration openings of another portion of the vacuum cleaner upon a completion of pivoting of the actuation projection (B), whereby closure of the vacuum cleaner is only possible on entry of the registration projections. 
     
     
       22. Vacuum cleaner according to claim 21, wherein the actuation projection (B) further comprises a plate pivotally connected to said drag cover (T); and the registration projections are provided on said plate.   
     
     
       23. Vacuum cleaner according to claim 19, wherein the actuation projection is connected by a connection to said drag cover enabling a pivoting of said actuation projection in the course of compression of the actuation projection. 
     
     
       24. Vacuum cleaner according to claim 23, wherein the connection comprises a flexible stretchable connecting means. 
     
     
       25. Vacuum cleaner according to claim 23, wherein the connection is a strap. 
     
     
       26. Vacuum cleaner according to claim 16, wherein the actuation projection has a lateral support for abutment against a frame of a dust-bag receiving portion of the vacuum cleaner. 
     
     
       27. Vacuum cleaner according to claim 26, wherein said receiving portion provides a slideway on which said lateral support is slidable in the course of a closing operation of the vacuum cleaner. 
     
     
       28. Dust filter bag for a vacuum cleaner, the filter bag comprising: a mounting plate comprising a card-paper material, and a dust bag connected to the mounting plate, the mounting plate having a sealingly closable opening for receiving a suction tube of a vacuum cleaner, the mounting plate further comprising an upper layer and a lower layer which extend across the dust bag with the lower layer being located between the upper layer and the dust bag;   a closure member disposed between said upper layer and said lower layer, and being displaceable from an open disposition into a closed position for closure of said opening; and   a rubber seal is provided on the peripheral edge of said opening, the rubber seal projecting inwardly beyond a periphery of said opening to provide an inwardly projecting stabilizing portion in overlapping relationship with the rubber seal.